The QSDC-500-40000-20 from Qualwave is a Directional Coupler with Frequency 500 to 40000 MHz, Coupling 6±1 to 20±1 dB, Directivity 10 dB, Average Power 20 W, Insertion Loss 2.6 to 3.9 dB. Tags: Module with Connectors. More details for QSDC-500-40000-20 can be seen below.